diff --git a/include/libtorrent/proxy_base.hpp b/include/libtorrent/proxy_base.hpp
index 214c9126d..37e3d0cf1 100644
--- a/include/libtorrent/proxy_base.hpp
+++ b/include/libtorrent/proxy_base.hpp
@@ -41,6 +41,7 @@ POSSIBILITY OF SUCH DAMAGE.
 
 #include "libtorrent/aux_/disable_warnings_push.hpp"
 #include <boost/function/function1.hpp>
+#include <boost/shared_ptr.hpp>
 #include "libtorrent/aux_/disable_warnings_pop.hpp"
 
 namespace libtorrent {